the essential parts of the 88 (and 99) are the same as a 75/8, except for a smaller platter, so sonically, disregarding the arm, they will sound the same. People have compared the 88/99 to 301/401/td124 with very favourable results, swings and roundabouts, really.
UK ebay prices are about £200 to £300, but don't come up too often, and condition is variable.
I have a G99, from ebay, about 5 years ago, for around £100, with a five hole idler, everything else perfect. The flexible pan has to be dealt with, I used [ brackets, three of them, and four stud rods on the periphery.
If you want one for the sonic benefits, I would recommend changing a 75, or similar. If for the looks, its a lot of money!
kind regards, Cats
there are many churches, few are full.....